Sony KDS-R50XBR1 Training Manual page 22

1) Except for the Lamp LED all flash
patterns will occur on the Front Panel
Red Power/Standby LED
2) All voltage are measured prior to unit
shutdown
3) Reference Chapter 4, Pages 45 - 52 for
detailed flowchart step descriptions
TVP-21
2005 SXRD Protection Mode Troubleshooting
Unit Shuts OFF
RED LED
Flashing
9X Flash Pattern
NOTE: Also call
Microprocessor I 2C
"Panel Error"
Communications error
Check & Secure the
following Inter-board
connections
NOTES:
still Shutdown
Check Vottage Supply to
S1 & S2 boards
ASU-Board
CN2303/ pins 7 & 11
"Before Shutdown"
Flowchart B
Power Supply
Troubleshooting
Flowchart C-4
C-4
S1 to ASU
S2 to ASU
C to DSU
OK
Does unit
No
Problem
Solved
9X?
Yes
Is voltage
Yes
5V
Present?
No
GO-TO
Troubleshooting Flowcharts
Replace
S1 & S2 Boards
S1 A-1123-098-A
S2 A-1123-099-A
Does unit
No Problem
still Shutdown
Solved
9X?
Yes
Check Voltage
Supplies to C-Board
C-Board
CN6900/pins 4-6
"Before Shutdown"
GO-TO
Are voltages
No
Flowchart B
6.5V
Power Supply
Present?
Troubleshooting
Yes
Replace
NOTE:
Optical Block
Includes C-Board
Go to Appendix for
Part # Tables A-1 & A-2
Does unit
No Problem
still Shutdown
Solved
9X?
Yes
Replace
ASU/DSU Assembly
Go to Appendix for
Part # Tables A-1 & A-2
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